An asymmetric tower top tower crane for replacing cables of a central cable plane cable-stayed bridge

Abstract

The utility model discloses an asymmetric tower top pylon for central cable plane cable-stayed bridge cable replacement, related to bridge engineering technical field, including two support skeletons, two the support skeleton all is provided with the hanging beam, fixed part, the fixed part sets up on two the support skeleton, and is used for fixing two the support skeleton respectively on the cable tower top surface and cable tower retaining wall top surface, and, connecting support frame, two ends of connecting support frame are connected two the support skeleton respectively. Two support skeletons are fixed on the cable tower top surface and cable tower retaining wall top surface of asymmetric cable tower through fixed part, then use connecting support frame and connect two support skeletons, improve the connection intensity of overall structure, to make asymmetric tower top pylon can be more stably fixed in asymmetric cable tower top, solved for the structure of one side retaining wall, the conventional symmetrical structure tower top pylon is difficult to install, can not satisfy the complex demand of central cable plane cable-stayed bridge cable replacement problem.

Description

Technical Field

[0001] This utility model relates to the field of bridge engineering technology, specifically to an asymmetric tower top falsework for replacing cables in a central cable-stayed bridge. Background Technology

[0002] During the long-term use of bridges, especially cable-stayed bridges with a central cable plane, cable replacement is a crucial step in maintaining bridge safety. Cable replacement work typically requires hoisting the cables at high altitudes. Due to the heavy weight of the cables, the requirements for the tower top support structure are extremely high, necessitating a reliable and efficient support structure to ensure the safety and smooth progress of the construction.

[0003] In actual construction, steel cantilever structures or corbel structures installed through embedded parts in the tower body are generally used to form the tower top falsework at the top. To ensure the symmetry of the stress on a single tower during the replacement of the stay cables, the tower is designed to have simultaneous and symmetrical cable replacement on both sides, thus ensuring symmetrical stress on the tower top falsework.

[0004] However, for some asymmetrical tower top structures, such as structures with a retaining wall on one side, it is difficult to install the conventional symmetrical tower top falsework, which cannot meet the complex requirements for cable replacement of cable-stayed bridges with central cable surfaces. Utility Model Content

[0005] This application provides an asymmetrical tower top falsework for cable replacement of a central cable-stayed bridge, which can solve the technical problem that conventional symmetrical tower top falsework is difficult to install for structures with a retaining wall on one side, and cannot meet the complex requirements of cable replacement for a central cable-stayed bridge.

[0006] This application provides an asymmetric tower top falsework for replacing cables in a central cable-stayed bridge, comprising: Two supporting frames, each equipped with a hanging beam; The fastener is disposed on the two supporting frames and is used to fix the two supporting frames to the top surface of the tower and the top surface of the tower retaining wall, respectively. In addition, a connecting support frame, the two ends of which are respectively connected to the two supporting skeletons.

[0007] In one embodiment, the support frame includes: Fixed longitudinal beams, multiple fixed longitudinal beams are arranged at intervals, and the suspension beam is arranged between the ends of adjacent fixed longitudinal beams. The fixed longitudinal beams are connected to the connecting support frame. The fixed crossbeams are provided in multiple forms, with the multiple fixed crossbeams spaced apart between adjacent fixed longitudinal beams; In addition, a strength support member is provided on the fixed longitudinal beam. In one embodiment, the strength support includes: Support columns are vertically mounted on the fixed longitudinal beams, and fixed cross beams are also connected between adjacent support columns. In addition, a reinforcing diagonal brace is provided between the supporting column and the fixed longitudinal beam.

[0008] In one embodiment, the fastener includes: Multiple anchoring steel plates are fixed at intervals along the length of the fixed longitudinal beam to the bottom of the fixed longitudinal beam, and anchor holes are provided on the anchoring steel plates. In addition, a plurality of anchors are disposed within and extend from the anchor holes, the protruding ends of which are used to insert into the top surface of the tower or the top surface of the tower retaining wall.

[0009] In one embodiment, the anchor is configured as a chemical anchor.

[0010] In one embodiment, the connecting support frame includes: Multiple support columns, with each end of the support column connected to two support frames along its length; In addition, a plurality of connecting cross braces are provided at intervals between adjacent support columns.

[0011] In one embodiment, the connecting support frame further includes: A connecting diagonal brace is obliquely disposed between adjacent connecting cross braces located on the same horizontal plane.

[0012] In one embodiment, an asymmetric tower top falsework for replacing cables in a central cable-stayed bridge further includes: The stiffening plate is provided on the supporting frame and the connecting support frame, and the stiffening plate is provided at the connection between the supporting frame, the connecting support frame and the fixing member.

[0013] In one embodiment, an asymmetric tower top falsework for replacing cables in a central cable-stayed bridge further includes: Lifting lugs are provided on the lifting beam.

[0014] In one embodiment, both the supporting frame and the connecting support frame are made of steel.

[0015] The beneficial effects of the technical solutions provided in this application include: Two support frames are fixed to the top surface of the asymmetrical pylon and the top surface of the retaining wall of the pylon respectively by fasteners. This can fit the structural shape of the top of the asymmetrical pylon and provide a hoisting position for the suspension beam. Then, the two support frames are connected by a connecting support frame to improve the connection strength of the overall structure. This allows the asymmetrical pylon top false frame to be more stably fixed to the top of the asymmetrical pylon. This solves the problem that conventional symmetrical pylon top false frames are difficult to install for structures with a retaining wall on one side, and cannot meet the complex requirements of cable replacement for cable-stayed bridges with a central cable surface. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a side view of an asymmetric tower top falsework used for cable replacement in a central cable-stayed bridge according to this application; Figure 2 This is a front view of an asymmetric tower top falsework used for cable replacement in a central cable-stayed bridge according to this application; Figure 3 This is a schematic diagram of the structure in this application where the fixed longitudinal beam is fixed to the top surface of the tower; In the diagram: 1. Support frame; 11. Lifting beam; 111. Lifting lug; 12. Fixed longitudinal beam; 13. Fixed cross beam; 14. Supporting column; 15. Reinforcing diagonal brace; 2. Supporting column; 21. Connecting cross brace; 22. Connecting diagonal brace; 3. Anchoring steel plate; 31. Anchor; 4. Stiffening plate; 5. Top surface of the pylon; 51. Top surface of the pylon retaining wall. Detailed Implementation

[0018] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0019] This application provides an asymmetrical tower top falsework for cable replacement of a central cable-stayed bridge, which solves the problem that conventional symmetrical tower top falsework is difficult to install for structures with a retaining wall on one side, and cannot meet the complex requirements of cable replacement for a central cable-stayed bridge.

[0020] This application describes an embodiment of an asymmetrical tower top falsework already installed on the top of a cable tower with a retaining wall on one side, referring to... Figure 1 This application discloses an asymmetric tower top falsework for replacing cables in a central cable-stayed bridge, comprising two support frames 1, fixing components, and connecting support frames. The two support frames 1 are respectively installed on the top surface 5 of the tower and the top surface 51 of the tower retaining wall via fixing components. The two support frames 1 are installed opposite each other at the same horizontal level, and each support frame 1 is provided with a lifting beam 11. The lifting beam 11 extends from the top surface 5 of the tower and the top surface 51 of the tower retaining wall to facilitate the subsequent connection of the bridge cable stays to the lifting beam 11, and can conform to the structural shape of the asymmetric tower top to provide a lifting position for the lifting beam 11. Lifting lugs 111 are also welded onto the lifting beam 11 to facilitate subsequent connection work. The two ends of the connecting support frame are respectively connected to two support skeletons 1, so that the two connecting skeletons are connected into a whole. This allows the two support skeletons 1 to maintain weight balance on the same horizontal plane on the top surface 5 of the tower with a retaining wall on one side, improving the connection strength of the overall structure. This allows the asymmetrical tower top false frame to be more stably fixed on the top of the asymmetrical tower, solving the problem that conventional symmetrical tower top false frames are difficult to install for structures with a retaining wall on one side, and cannot meet the complex requirements of cable replacement for cable-stayed bridges with central cable surfaces.

[0021] More specifically, refer to Figure 1 and Figure 2 The support frame 1 includes fixed longitudinal beams 12, fixed transverse beams 13, and strength supports. Multiple fixed longitudinal beams 12 are spaced apart. In one embodiment of this application, two fixed longitudinal beams 12 are specifically provided: one on the top surface 51 of the tower retaining wall, with the two fixed longitudinal beams 12 spaced apart along the width direction of the top surface 51; and another on the top surface 5 of the tower, with the two fixed longitudinal beams 12 spaced apart along the width direction of the top surface 5. The fixed longitudinal beams 12 extend beyond the top surface 5 of the tower and the top surface 51 of the tower retaining wall. Suspension beams 11 are fixed between adjacent fixed longitudinal beams 12 and are all located on the extended ends of the fixed longitudinal beams 12. Multiple fixed transverse beams 13 are also provided and positioned between opposite fixed longitudinal beams 12. In one embodiment of this application, two fixed transverse beams 13 are also provided, spaced apart along the length direction of the fixed longitudinal beams 12 to improve the stability of the connection between the fixed longitudinal beams 12.

[0022] Strength supports are installed on the fixed longitudinal beam 12 to further enhance the stability of the support frame 1. The strength supports include support columns 14 and reinforcing diagonal braces 15. The support columns 14 are vertically installed on the fixed longitudinal beam 12. In one embodiment of this application, the number of support columns 14 corresponds to the number of fixed longitudinal beams 12. The two support columns 14 are installed on the same horizontal line, and a fixed crossbeam 13 connects the support columns 14 to form a whole, enhancing the overall structural stability. Reinforcing diagonal braces 15 are installed between the support columns 14 and the fixed longitudinal beam 12 to provide additional support force to the support columns 14. In this embodiment, two reinforcing diagonal braces 15 are also provided. The two ends of the reinforcing diagonal braces 15 are respectively connected to the top of the support column 14 and one end of the fixed longitudinal beam 12 where the suspension beam 11 is located. One reinforcing diagonal brace 15 is connected to each end of the fixed crossbeam 13 along its length to further enhance the overall connection strength.

[0023] Reference Figure 3 The fixing components include multiple anchor steel plates 3 and multiple anchors 31. The anchor steel plates 3 are welded at intervals along the length of the fixing longitudinal beam 12 to the bottom of the fixing longitudinal beam 12, that is, the side of the fixing longitudinal beam 12 that connects to the top surface 5 of the tower or the top surface 51 of the tower retaining wall. Anchor holes are provided on the anchor steel plates 3, and the anchors 31 are placed in the anchor holes of the anchor steel plates 3, extending from the anchor holes and inserting into the top surface 5 of the tower or the top surface 51 of the tower retaining wall, thereby fixing the fixing longitudinal beam 12 with the welded anchor steel plates 3 to the top surface 5 of the tower or the top surface 51 of the tower retaining wall. In one embodiment of this application, chemical anchors are specifically selected for the anchors 31 to more stably fix the fixing longitudinal beam 12 to the top surface 5 of the tower or the top surface 51 of the tower retaining wall.

[0024] The connecting support frame includes multiple support columns 2 and multiple connecting cross braces 21. The two ends of each support column 2 along its length are connected to two support frames 1, as shown in the reference diagram. Figure 1 In one embodiment of this application, four support columns 2 are specifically provided. The four support columns 2 are arranged in a rectangle. The fixed longitudinal beam 12 located on the top surface 51 of the cable tower retaining wall extends towards the cable tower. Two support columns 2 are connected to each fixed longitudinal beam 12. The connecting cross brace 21 is welded between two adjacent support columns 2, so that the overall connection strength of the connecting support frame is higher and the use is more stable.

[0025] To further enhance the strength of the connecting support frame, the connecting support frame also includes a connecting diagonal brace 22, which is inclinedly arranged between adjacent connecting cross braces 21 located on the same horizontal plane, so as to make the connecting support frame stronger.

[0026] More preferably, stiffening plates 4 are provided on both the support frame 1 and the connecting support frame to further enhance the connection strength of the support frame 1 and the connecting support frame. In one embodiment of this application, the stiffening plates 4 are specifically fixed at the connection between the fixed longitudinal beam 12 and the support column 14, and at the connection between the connecting support frame and the fastener. Specifically, the stiffening plates 4 are fixed between the fixed longitudinal beam 12 and the anchor steel plate 3 to enhance the connection strength between the fixed longitudinal beam 12 and the anchor steel plate 3.

[0027] In order to extend the service life of an asymmetric tower top falsework used for cable replacement of a central cable-stayed bridge and to improve its structural strength, the support frame 1 and the connecting support frame are both made of steel.

[0028] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0029] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0030] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. An asymmetric tower top falsework for replacing cables in a central cable-stayed bridge, characterized in that, It includes: Two supporting frames (1), each of which is equipped with a hanging beam (11); The fasteners are installed on the two support frames (1) and are used to fix the two support frames (1) to the top surface (5) of the tower and the top surface (51) of the tower retaining wall, respectively. In addition, a connecting support frame, the two ends of which are respectively connected to the two supporting skeletons (1).

2. The asymmetric tower top falsework for replacing cables in a central cable-stayed bridge according to claim 1, characterized in that, The supporting frame (1) includes: Fixed longitudinal beams (12) are provided at intervals, and hanging beams (11) are provided between the ends of adjacent fixed longitudinal beams (12). The fixed longitudinal beams (12) are connected to the connecting support frame. Fixed crossbeams (13), and multiple fixed crossbeams (13) are also provided, with multiple fixed crossbeams (13) spaced apart between adjacent fixed longitudinal beams (12); In addition, a strength support member is provided on the fixed longitudinal beam (12).

3. The asymmetric tower top falsework for replacing cables in a central cable-stayed bridge according to claim 2, characterized in that, The strength support component includes: Supporting columns (14) are vertically mounted on the fixed longitudinal beam (12), and the fixed cross beams (13) are also connected between adjacent supporting columns (14). In addition, a reinforcing diagonal brace (15) is provided between the supporting column (14) and the fixed longitudinal beam (12).

4. The asymmetric tower top falsework for replacing cables in a central cable-stayed bridge according to claim 2, characterized in that, The fastener includes: Multiple anchoring steel plates (3) are fixed at intervals along the length of the fixed longitudinal beam (12) to the bottom of the fixed longitudinal beam (12), and anchor holes are provided on the anchoring steel plates (3); In addition, a plurality of anchors (31) are disposed in and extend out of the anchor holes, the protruding ends of the anchors (31) being used to insert into the top surface (5) of the tower or the top surface (51) of the tower retaining wall.

5. An asymmetric tower top falsework for replacing cables in a central cable-stayed bridge according to claim 4, characterized in that: The anchor (31) is configured as a chemical anchor.

6. The asymmetric tower top falsework for replacing cables in a central cable-stayed bridge according to claim 1, characterized in that, The connecting support frame includes: Multiple support columns (2), with each end of the support column (2) connected to two support frames (1) in the length direction; In addition, a plurality of connecting cross braces (21) are provided at intervals between adjacent support columns (2).

7. An asymmetric tower top falsework for replacing cables in a central cable-stayed bridge according to claim 6, characterized in that, The connecting support frame also includes: A connecting diagonal brace (22) is obliquely arranged between adjacent connecting cross braces (21) located on the same horizontal plane.

8. The asymmetric tower top falsework for replacing cables in a central cable-stayed bridge according to claim 1, characterized in that, Also includes: The stiffening plate (4) is provided on the support frame (1) and the connecting support frame, and the stiffening plate (4) is provided at the connection between the support frame (1), the connecting support frame and the fixing member.

9. An asymmetric tower top falsework for replacing cables in a central cable-stayed bridge according to claim 1, characterized in that, Also includes: Lifting lug (111), which is disposed on the lifting beam (11).

10. An asymmetric tower top falsework for replacing cables in a central cable-stayed bridge according to claim 1, characterized in that: The supporting frame (1) and the connecting support frame are both made of steel.

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